Gauge for fastening-inserting machines



Patented Sept. 4, 1934 A STATES ATENT OFFEQE GAUGE FORFASTENING-INSERTING MACHINES Fred L. MacKenzie, Beverly, Mass., assignorto 53 4 f r United Shoe Machinery Corporation, Paterson,

N. J., a corporation of New Jersey Application November 2, 1932, SerialNo. 640,815

12 Claims. '(01. 1267) g This invention relates to welt handlinginechsole and the superposed welt at opposite sides in anisms forfastening inserting machines such as line contact, so that the work maybe conveniently those commonly used for --attaching welting to swung inpresenting it to the machine with its parts of McKay and other nailedshoes. In one edge in continuous contact with a suitableedge 9;:"5aspect the invention comprises an improved. roll gauge. Since thefeeding rolls thus engaging the for accurately feeding and smoothlypositioning work are traveling at the same rate, the welting stormwelting, or beaded welting of any descripis advanced and rolled intoplace with no tendency tion,iupon a sole or; other shoe part to which itis toward wrinkling and this action is supplemented to .be attached inthe shoemaking process. In by the free rolling of the other sectionofthe roll "10'. another aspect it comprises a novel combination atwhatever rate of speed may be imparted to it ofinstrumentalities forfeeding in an improved by its contact with theouter surface of the bead.manner botha sole and a beaded weltto the in- These and other featuresof the invention will serting devices of a fastening inserting machine.be best understood and appreciated from the fol- It has been'a difiicultoperation heretofore to lowing description of a preferred embodiment 5';attach storm welting to the margin of a McKay thereof, selected forpurposes of illustration and sole with the desired accuracy of locationand shown in the accompanying drawing, in which smoothness in thewelting, particularly about the Fig. l is a view of portions of themachine head toe and in the shank of the shoe where the weltin sideelevation; ing must follow, a curved'path. This is partly Fig. 2 is afragmentary view in longitudinal 0 due to the irregular cross sectionalcontour of the section, on an enlarged scale, of the feeding rolls 8owelting-and to thefact that in leading welting showing the work inposition between them; around curves thewhole' area of the welting doesand not :move in exact correspondence with the travel 3 is a view inperspective on a smaller of feeding rolls of the typeheretoforeemployed. scale of the, same parts of the machine together ;F0r example,in rounding the toe, the outer surwith the welt; ide,

face ofthewelt bead, swinging on the longer m- The invention is hereinshown as embodied in dS 30 travel faster than the feed roll, a stapleinserting machine of the construction and in:;rounding thainside curveof the shank disclosed in U. S. Letters Patent No. 1,016,930, wheretheweltins-is oppo it ly Curved th flange granted February 13, 1912 on anapplication of ggtportion tends to travel faster than the roll. The W.H. Borden. For such details of mechares l has been-t0 Pucker Wr k the Wn nism as are not herein illustrated, reference may on one edge 0 theother. 9 to 03118611116 feed You be had to that patent. The illustratedmachine 1 cut ac s the Welting and S0 misplace it 011 includes a headframe 10 in which is journaled a thesole. main shaft 12 driven by apulley, not shown, 35; The p ese invention a to ve th p o and providedat its forward end with a drivlem d P e chanism, whereby beade ing cam14 having a projecting segment 16. A wel i 's ine m be fed an positionedm driver bar 20 is mounted for vertical reciprocation accuratelra dsmoothly than e o r and in the head frame 10 and is provided with a lugwithfg'reater assurance against the mischance of 13 hi h is engaged bythe cam segment 16 4ozierratiobehav o n l'qhe'part O the feed when thecam is rotated. The driver bar is vI have'dise v e that thedifficulfiies above thereby elevated to the top of its stroke and thencussed may he o vi engaging the Welting disengaged by the cam segment,whereupon it is for feed g P p only upon the Surface of the drivendownwardly by spring mechanism, not bead-adjacent to the flange of thee, that shown, to drive the previously formed staple 4511s t ayia ns ana w n nclud t d through the welting and in the underlying work. estpartef the Welling and Preferably the inner The wire 22, from which thestaple is formed, convex surface of. the bead or a substantial porisSuppned fmm a real, not Shown and advanced tion thereof. It appears thatif the welt is fed between feed r0115 24} and go t forming machbyfeeding engagement in s Z0118 at the am anism, where it is shaped into astaple and derate-as the work to which it is to be attached, livered tothe driving nozzle in line with the then thewelting will be smoothly andaccurately driver bar The upper feed 1.011 24 has a positioned and boththe flange and the outer porgrooved periphery to receive the wire and istion of the head will take care of themselves and mounted upon theforward end of haft, 25 lie smoothly in place. As herein shown, theserewhich is journaled in a bracket block 28 bolt d 55 :sults areaccomplished by employing aroll having to the side of the head frame 10.The lower two sections profiled'to supplement each other roll 30 has aflat knurled periphery and is mountin fitting thecrosssectional contourof the'welt ed for free rotation upon a stud 32 which probead, one ofsaid sections being driven in its enjects outwardly from a pivoted arm34. A tengagement with the welting and the other being sion spring 36extends between the outer end of gdfreely rotatable. It is thus possibleto engage the the stud 32 and the lower end of an adjustable bolt 38which projects downwardly from a bracket arm upon theblock 28. Thespring 36 acts to engage the wi e yieldingly between the two feed rollsduring their feeding movement of the wire and means, not herein shown,are provided for depressing the arm 34 so as to disengage the wirebetween feeding strokes.

The shaft 26 is provided atits rear end with a gear so which meshes withandis'rotated by a segment 42 carried by the lower end of a rock inglever 44 journaled upon a stud 46 which projects rearwardly from an caron the bracket block 28. The upper arm of the rocker lever has a slidingconnection with the lower end of an arm 48 which extends downwardly froma sleeve 50 journale'd to rock between bearings. in the upper part ofthe head-frame. A cam arm 52 is formed integral with the sleeve 50 andprovided with a cam roll which runs in a cam track formed in the rearface of the cam disk 5 upon the shaft 12.

ihe Wire feeding mechanism above described forms no part of the presentinvention and it is suflicient for present purposes to say that theoscillation of the rack 42 under the actuation of the cam 54 imparts acorresponding oscillation to the shaft 26 of the upper wire feedingroll. In the advancing movement of the feed roll, the wire being heldfirmly in its groove by the idle roll 36, the wire is advanced to supplya length suitable for the staple desired. Then, in reverse movement ofthe feed roll, while the lower roll 30 is depressed and the wiredisengaged, no movement is imparted to the wire. After the staple hasbeen shaped, it is driven downwardly through the nozzle 58 into the workbeneath it.

The work rests upona lower feed roll 90 arranged to rotateintermittently about a rearwardiy inclined axis and having a beveledperiphery which supports the work by substantially line contact. i'eedroll is actuated by mechanism which will now be described. The cam 54 isprovided in its forward face with a track in which is received a camroll 60 which is secured to the forward end of a lever 61, the forwardend only of which is shown in 1, its rear end being pivotally mounted ata point behind the shaft 12, as seen in this figure. To the forward endof the lever 61 is 'pivotally connected a vertical link 68 connected atits lower end to a rack bar 70 mounted to slide in a substantiallyvertical slideway 72 which is bolted to a forked bracket 62 adjustablysecured to the column of the machine. The bracket 62 has bearings for ashaft 64 having loosely journaled thereon a gear 74 which meshes withthe rack '70 and is oscillated thereby. An arm 76 is secured to the gear74 and'this carries a spring pawl which cooperates with a ratchet diskfast upon the shaft 64. The result is that in the reciprocation of therack, an intermittent rotation in clockwise direction is imparted to theshaft 64 and this movement of the shaft is utilized to drive the feedrolls ofthe machine.

The shaft 64 is provided near its forward end with a beveled gear 78which, in turn, meshes with an elongated pinion 80 journaled in bearingsin the forward arm of the forked bracket 62. The bracket 62 has avertical bore through which extends a spindle 84 carrying at its upperend a head 86 in which is mounted the inclined shaft of the feed roll90. At its lower and inner end, this shaft is provided with a beveledgear meshing with the elongated pinion 80. The

1,972,101 spindle .84 is normally urged upwardly by a compression springto a position detemiiiied by the thickness of the work. The connectionbetween the elongated pinion 80 and the beveled gear 88 permitsvariations in the vertical position of the feed roll 90 withoutinterrupting the driving connection thereto;

The shaft 64 carries at its forward end the welt feeding roll and forthis purpose is shouldered and provided with a. threaded end. The weltfeeding roll comprises two concentric roll sections. The inner section92 is provided with an elongated threaded stem 93. When this section isscrewed fully upon the end of the shaft 64, the end of the stem 93engages the shoulder in the shaft and the roll s'ect i'on 92 is,therefore,

rigidly mounted upon the shaft and driven than:

with in its feeding engagementwith "the Welt The outer or disk portionof the r'oll '92 tim filed or provided with a concave surface inwardlyaway from the end of the roll Diametrically disposed spanner holesmgrepro vided in the end of the roll s'e'etionliz to facilitate itsattachment to or removal from the than '64 The other roll section '94 isslightly less in length than the length of the stem 93 "of the rollsection 92 and uponthe stem. It is provided with-e rib and is profiledor'provid'ed with a. concave peripheral surface ppposite toand with theconcave surface of the roll section The shape and character er the feedroll sec tions will be "clear from 'a'n inspection of 1., where theWell; strip is shown on v 7 scale and in "cross section. Thisillustrates one commercial form of stdrmjweltiia'g V "roWQed Wm athickened and rounded bead 162%]; its margin and a fiat thin-her nssge104 mm margin. The weltin'g' is shown is SH-"DWI upon a double McKaysole hioh located in the machine and guided thei'eto'by engm ment withan *ad-iustable edge gauge Bdrhodntb'l in the bracket 62. It'will beseen that the 3amcave circumferential zone of the doll M fits the upperandi'rmr convex by engaging this portion of the 'lting that an advancingfeeding movement is The concave circumferential sulfate '0! the rollsection 94 upon the shank or-stemgii.

The storm welting is delivered to the of the sole 100 by a 'welt guide=98 mounted upon the head passage corresponding to of the weltin'g. Thewider portion dfthe' welt guide passage is shaped to accommodatethBFbGfld J 1 2 and is aligned with the groove in "themelt feeding rollformed by the cboperating concave the shaft .64 and designed as toimpart the same {circumferential speed to the driven :roll section 92of-the welt feeding'rolland'the lower vfeedroll-90.

In operating :the :machine, the depressed to permit the Sole 100 isjournaie'd for tree rotationshrine of welt bead 102 and, as alreadyeikplained, it is and smoothin efrecttnereun 1'0 ing movement ispermitted by the axial may of frame of the machine, and having athecross sectional 'ma surfaces of the roll sections 92 and 94. iit'will be understood thait thesgeared connectionibeiwveen the lower feedroll '90 is so spindle 8,4 is: and the m r the welt 102 ;-ro4 to beiinserted between the g two feed rolls. When the spindle is released sothat it may be elevated by its compression spring, the work is lifteduntil arrested by engagement with the welt feeding roll which rotatesabout the normally stationary axis of the shaft 64. In presenting thework to the machine, it will be understood that thewelt passes directlyfrom the end of the welt guide 98 to the surface of the sole 100 inposition beneath the welt feeding roll 92-94. The edgewise position ofthe sole is determined by the edge gauge 96 and the widthwise positionof the welt upon the sole is determined by the welt feeding roll 92-94which, in addition to its other functions, serves as a gauge forpositioning the welt strip and thus determines the margin between thewelt bead 102 and the edge of the sole 100. When now the machine isset'in operation, the feed rolls are intermittently rotated to advancethe work in step by step manner past the end of the nozzle 58. At eachinterruption of the feed the driver bar 20 is actuated and a staple 106driven through the flange 104 of the welting and into the sole 100beneath it. Between each fastening inserting operation, the feed rollsact in unison to advance the work, drawing the welting from the weltguide 98 and positioning it accurately and smoothly upon the surface ofthe sole 100 at a predetermined uniform distance from the edge of thelatter.

It will be understood that the type of storm welting herein illustratedis selected as one example only of a welting which may be advantageouslyhandled by the'mechanism of my invention.

Having thus described my invention, what I claim as new and desire tosecure by Letters Patent is:

1. In a machine for attaching beaded welting, the combination withfastening inserting mechanism of a welt feeding and laying roll havingtwo sections profiled to supplement each other in fitting the crosssectional contour of the welt bead, one of said sections being driven inits engagement with the welt and the other being freely rotatable.

2. In a machine for attaching beaded welting, the combination withfastening inserting mechanism of a welt feeding and laying roll havingtwo sections profiled to correspond in their joint contour with thecross sectional contour of the welt bead, the section engaging the outersurface of the bead being freely rotatable and the other section beingdriven.

3. In a machine for attaching beaded welting, the combination withfastening inserting mechanism of a welt feeding and laying roll havingtwo sections profiled to fit between them the cross sectional contourofthe welt bead, one section being driven and having a shank rotatabletherewith and the other being loosely mounted on said shank.

4. In a machine for attaching beaded welting, the combination withfastening inserting mechanism of a welt feeding and laying roll havingconcentric sections profiled to fit opposite surfaces of the welt bead,means for driving that section fitting the surface of the bead next tothe welt flange, and means for supporting the other roll section forfree rotation.

5. In a machine for attaching storm welting, means for supporting andfeeding a sole, fastener inserting devices, a welt guide, and a weltfeeding and laying roll having an inner driven member with its peripheryconcave in cross section to fit the inner surface of the bead of thestorm welting and an outer freely rotatable member with its peripheryshaped to engage the outer curved surface of the bead of the welt.

6. In a machine for attaching storm welting, a welt feeding and layingroll having a section shaped to engage the thick part of the welt beadadjacent to the welt flange and being rotated to roll the bead smoothlydown upon the work to which it is to be attached, and another sectionarranged to roll freely on the outer surface of the bead as the welt isbeing so placed.

7. In a machine for attaching storm welting, cooperating feed rolls forengaging a storm welt and sole bysubstantially line contact andadvancing them together, the welt engaging roll comprising concentricsections one of which is shaped to fit the inner surface of the weltbead and driven at the same peripheral speed as the sole engaging roll,and the other of which is free. to be rotated by contact with the outersurface of the welt bead.

8. Welt handling mechanism for a fastening inserting machine, includinga guide for a beaded welt and a roll adjacent thereto having a drivensection shaped to fit the thickest part of the welt bead, and aconcentric section free to move axially toward and from said drivensection.

9. Welt handling mechanism for a fastening inserting machine, includinga driven shaft shouldered and threaded at its outer end, a roll sectionhaving a hollow shank threaded upon the shaft and a disk portion with aconcave bead-engaging face, and a second roll section journaledconcentrically upon the stem of the first and having a circumferentialwelt-engaging surface.

10. In a machine for attaching storm welting to. McKay soles,cooperating feed rolls for engaging the sole and superposed welting bysubstantially line contact at opposite sides and advancing themtogether, and intermittently driven shafts for the rolls driven at equalspeed, the welt-engaging roll having a freely rotatable section engagingthe outer surface of the bead and a section fast on its shaft shaped toengage the storm welting in a narrow intermediate zone only.

11. In a machine having fastening driving devices, a sole supporting andfeeding roll, an edge gauge for controlling the path of the sole aspresented to the machine, and a roll for guiding beaded welting upon thesole having concave peripheral surfaces adapted to engage opposed facesof the welt bead and so gauge the path of the welting relative to theedge of the sole.

12. In a welt attaching machine, work supporting and feeding means, incombination with a roll for guiding beaded welting to the surface of thework, said roll comprising separate concentric sections, one of which isfreely rotatable and has a concave peripheral surface adapted to fitupon the convex outer surface of the welt bead and thereby gauge thewelting with respect to the work.

FRED L. MACKENZIE.

